Concrete distributor



March 4, 1930. N. M. ROSENDAHL ,2

CONCRETE DISTRIBUTOR Filed April 10, 1926 2 Sheets-Sheet 1 March 4, 1930. N. M. ROSENDAHL coucnm'm DISTRIBUTOR Filed April 10, 1926 v 2 Sheets-Sheet 2 //V Vin 701?. MjkW thereof. I

Patented 4, i930 TEs , {NILs M. ,RbSENDAHL, or WATERLOO, Iowa, ASSIGNOR TO oonsTRUoTIoN MACI-HNERY COMPANY, A CORPORATION or IOWA CONCRETE msrnnzu'roa Application filed April 10,

v and obviate the necessity of a special device for such purpose.

Other objects and advantages .of the invention Will, appear in the further descriptlon 2 Referring now to the accompanying draw- "ings, forming part of this application, and- I wherein like-reference characters indicate like artsp 7 Y a Figure 1 is a diagrammatic elevation of the v.pa ver boom and, theoperable mechanism associated therewith; v V I, 1

;F igure"2 is an elevationof. the operating 'mechanism taken at right angles to Figure 1; .-,;iFigure,3isa section-on the line 33, Fig- 65; I '1 i Figure dis a bottom plan view of the dis- ,chargeend of the'bucket showing the doors .rthere'of closed; '1 1 v Figurefi is anelevation at right angles to -Figure r3' of the bucket suspension; p I of Figure 6 is an elevation of the cushion crosshead-in the bucket suspension; and r F gure 7 lsa vlew slmllar to Figure 3, ex-

" afigcept thatthe bucket 3 is shown in its open position with one doorthereof in position .to

,act as aspreader.

lrep'resents the boom, which is, in this il- 7 lustratlon, shown as being composed of'two e0 spaced channel bars back to back, and in i" which channel barsthe bucket carriageisre- V ciprocably mounted as upon the wheels 2, the

r l carriage being illustrated at 3.

, The'boom 1 is'pivot ally mounted as at 4 t-upon the forward frame portion ,5 of the Qpaver', while the outer endof 'theboom is as is customary supported byata'ckle 6 operating-in the sheave? adjacent the outboard end of-the boom or jib.

V 60 1 e The bucket operating mechanism illusand about the sheave 21 mounted upon the bucket arms 25.

1926. Serial No. 101,010.

trated at 8, the same, as a preferred form of construction, comprising the drive shaft 9 upon which the two frictionally driven drums l0 and 11 are mounted and operated by the clutch lever 12 being-pivoted at 13 for alternate engagement with the drums, or capable of neutral position when neither drum is operated. There is also provided a foot band brake 13 for either drum each having a pedal 14.- for engagement by the foot of the operator. The pulling out cable is illustrated at 15, it being wound about the drum 10 and passing overa sheave mounted on the shaft 16 near the. pivotal endof the boom and also about the sheave 17 in the free end of the boom, then back to its permanent connection at;18 about the sleeve of the transverse shaft 19 in the bucket carriage 3, so that any draft inwardly upon the cable 15 tends to draw the bucket carriage andbucket outwardly.

The bucket return line is illustrated at 20, passing overany convenient arrangement of sheavesin the paver, over a sheave on the shaft 16 near the heel of the boom, thence to shaft 19; in the bucket carriage, and backwardly to where it is pivotally fixed as at 22 to the crosshead trigger 23 mounted upon the shaft 24 in the carriage 3 intermediate of the In the notched center of the crosshead trigger 23 and upon the shaft 2% is slung oneend of the chain 26, the-opposite end beingattached to the transverse shaft 27 in the upper end of the links or arms 28 .which control the bucket doors.

This shaft 27 alsocontrols the outer end of the lever 29 which ispivoted upon the transverse shaft 30 in the carriage framein the depending portion. 31 of the carriage frame, the chain 26 acting as a limiting device or snubber to the throw of both the lever 29 and the bucket Cloors. i 1

The lower end of the lever 29 has pivotally attached thereto'as at 32 the rod 33 connected at its opposite end tothe transverse shaft 34 mounted upon either end in a sleeve 35, each slidably carried upon its respective'ro'd 36. These rods are mounted at their upper ends in the hub-like depending portions 37 in the outboard end of the carriage 3, and at their trigger is provided with,invertedfleshaped a extremities 42 surmounting the rods 36, and

were not such tension covered by the position of the set 'collarsel or otherwise-ibis evident" that 'dra fft -u'po1rthedine would cause the trigger 23 to engage the-sleeves 85 producinga pull w on the rods 33 and tripping thebu'cketwdoors -it-being seenby this novel toggle connection of bucket doors that once closed-theya-re so biased, the center -otthe slrarft 27ibeing forwardly oft-he center ci -the 2 shadt 30; which formsfithe pivotalpoint-of the lever 29. However, by the proper adjustment of the set-ebllardl, it is' ev-ident 5 that the doors of the bucket mayf be made --to remainclosed at all times duringany nor mal stress uponthe line 20 in causmgthe bucket-to travel inwardly towards the machine, but wherever desired, :any sudden stress; upon theeline-"2O to overcome-such The :depending 'door operating arms" 28 are pivotally connected as at/l3- to the head :44 through which the door rods- 14:5 are :1nounted, =they having expansive spiral springs' lfl about their 'upper ends between -their holdingmuts and the head so as to pro- :vide suflicient'resiliency for same, while their oppositeends areattached to the doors 47, :these latter b'eing semi-circular :to coincide -with thecirc'ular bucket 50, as such flS preferred to any other form-of bucket, the tendency of'concrete-to stick being reduced to a minimum insuch form ofbucket. Furthermore this novel arrangement ofbucket door sosus'pension provides for one door hanging considerably lower than the other,- as clearly I illustrated in Figure 7, to act as: a spreader or scraper for the contents as it leaves the bucket. l

uponf the extreme outer'ends or the shaft 27 which formsthe pivotal connection between JtheIbucketa-rms 28 and the lever 29;By this smeans when the open bucket [1s brought in board to'its filling :position the shaft 27 will o5pberaisedfnby virtue of the rollers sliding up ...ate,arms 48 having lifted the shaft 27 by .engagementiwith the rollers A9 onthe ends 1 thereof, to, its locked position, as previously carriage' ba'ckw ardly simultaneously v,{wi'th -ap- =-plying draft :onthe orosshead trig'ger a wardlywithout dumpingonlysiifiicient stress 'Justbelow the pivotal "connectionA of the thearcuate arms 48 with the doors locked I when the bucket is home, as shown in Figure l 3 of the drawings, this simple form of toggle lock being old in the art.

I The operation of the device is as followsj =-Assumi n gs the'bucket asr-beingj-loaded, and in its-inboard onloading position, the arcudescribed, to witz'the shaft 27 being beyond theshaft 30 which forms the pivotal con nection of the lever 29, so that the doors of the :7bllGktr-W lll remain normally closed.

Stress is then applied to the line 15, and the p bucket and carriage drawn to any desi're'dpoto dump the bucket; sufli'cie'ntlysudden-stress is-put upon the linef20. which tendsto-pullithe which latter stress' is toward *unlocking' th'e lever -29 f and if sufiicient to overcome the -tension-of the springs-L38 and *the -overbalanced :wei'g'ht uponthe -upper ;or tree end of 1190' "thelever' 29;as previou sly'described, the 'doors of the bucket will be opened.- "12V hereasyi'f it is I desired only-to move the bucket b-ackfor such purpose is applied, as it isobvio'us that oppositestress of the operating me'eha- J ni-sm' whether the' 'bu'cket is traveling'in either I direction -will-cause thej same t'o dump. i cushioning of the door lock will cau-se-saine 35 to instantly open.

From the foregoing it is evidentf 'that fl have-produced comparatively simple and *positive bueket control operated by twoidis-' tinct and separate lines, and one that; per- I claim and desire to secure by Letters Patt 1. The combination"witlrafdeviceo'f the character described including -a =boom," a carriage ;;m ounted upon the boom, a bucket 'car- -1 1 a ried' by the-carriage, and lines 5 for operating 7 I the carriage, ot means wh'erjeby opposite stress upon the lines; opens the bucket, said "means comprising a bracket dependingfrom the carriage, an arm pivotal-1y mounted withi in the bracket-the outboard end of said arm having limitingmeans attached thereto and 1 f the inboard end of the arm beingoperated by springcontrolled means directlyconnected to one ,ofthe lines, arid doormontrjol'ling m means attached to theioutboard-e end ofsaid :arin.

2; The combination withe-jdeviceoflthe character described includinga b'o'om;a -car-i riage 'mountedupon-the boonna bucket car- 2 ried by the carriage, lines for operating the carriage, 1 and: means carried by'jthe carriage wher'ebyone 'of thehne'smaybe made-j toiopen the doors of the bucket, said nieans 'compris- 3 ring. a pivotallyzmounted trigger intermediate 7 of the ends ofwhich the bucket operating j line is attached and the free end of which scribed comprising a horizontally reciprocatrigger indirectly opens the door of the bucket, and means including resilient members whereby motion of the trigger is indirectly imparted to the doors of the bucket in opening same. I p v r j A bucket suspension of the character deble carriage, a depending frame structure carried thereby, arcuately shaped bucket supporting armsdepending from the frame of v 7 the-carriage and rigidly fixed thereto and the bucket, a pivotally mounted suspension for the doors of the bucket carried by the carriage frame, said suspension comprisingan I arm to'the outboard end of which the doors of the bucket are indirectly attached, a crossheadtrigger and spring controlled reciprocal riage connected with the inboard end of the guides therefor within the frame of thecardoor operating arm. A

4. A concrete distributing mechanism comprlslng 1n comblnatlon a bucket carrying carnage, mechanism within the carnage for operating the doors of the bucket, a-line for operating the carriage in one direction, a second line for operating the carriage in the opposite direction and being directly connected to the bucket door operating mechanism, said connection being spring controlled and including spacedreciprocal rods optionally operated by the action of the line.

g 5. AI bucket, door operating mechanism" comprising a'crosshead trigger, spaced rods operable bythe free ends, of the trigger, llnk [mechanism for the doors of the bucket, arod connected to the link mechanism and slidably mounted upon thetrigger operated rods, 7

a line connected to the trigger for optionally opening the doors of the bucket, and tension 3? means carried by the rods for imparting opl posit-e stress uponcthetrigger to that upon I the line.

- 6. In combination a reciprocable carriage, a bucket suspended therefrom, doors for said bucket, link operating mechanism for said doors, spaced reciprocable rods carried by the carriage, a rod for operating the link mechanism reciprocably mounted upon the spaced rods, a crosshead trigger for. reciprocating the spaced rods, spring controlled means for holding the spaced rods against actionby the crosshead trigger, a line for operating the carriage inone direction and optionally opcrating the trigger against the action of the [spring controlledmeans, and a second line rection.

buckets comprising a cross head trigger, link mechanisms connecting the doors of the a bucket with the trigger, an operating line connected to the trigger for optionally opening the doors of the bucket or operating the latter, and adjustable tension means on said link mechanism whereby the stress on the trigger for dumping operation may be controlled.

In testimony whereof I hereunto affix my signature.

' NILS M. ROSENDAHL.

1 for operating the carriage in the opposite dir 7 A carriage and bucket door operating 1 I mechanism of the character described comprising a bucket carriedby the carr1age,a

, spring retained trigger carried by the carriage, spaced rods operable bythe trigger,

" link mechanism for the doors of the bucket, 

